Beckhoff EL3314 EtherCAT Terminal, 4-channel analog input, temperature, thermoco

Description

The EL3314 analog input terminal allows four thermocouples to be connected directly. The
EtherCAT
Terminal circuit can operate thermocouple sensors using the 2-wire technique. A microprocessor handles linearization across the whole temperature range, which is freely selectable. The error LEDs indicate a broken wire. Compensation for the cold junction is made through an internal temperature measurement at the terminal. The EL3314 can also be used for mV measurement.
echnical data
EL3314
Number of inputs
4
Technology
Temperature measurement (TC)
Connection method
2-wire
Signal type
differential
Temperature measurement (thermocouple)
type B, C, E, J, K, L, N, R, S, T, U (default setting: type K)
Measurement uncertainty (temperature measurement)
at 23 °C ambient temperature, with internal cold junction, according type: B: ±8.5 °C; C: ±6.2 °C; E: ±2.5 °C; J: ±2.7 °C; K: ±3 °C; L: ±2.3 °C; N: ±3 °C; R: ±6.7 °C; S: ±7.1 °C; T: ±2.9 °C; U: ±2.5 °C; for further details see documentation
Voltage measurement
±30/±60/±75 mV
Measurement uncertainty (voltage measurement)
at ±75 mV, 23 °C ambient temperature: < ±0.14 % (relative to full scale value)
Resolution
16 bit, representation adjustable: 0.1/0.01 °C or 1/2/4 µV per digit
Input filter limit frequency
typ. 1 kHz
Conversion time
approx. 2.5 s up to 20 ms, depending on configuration and filter setting, default: approx. 250 ms
Distributed clocks
–
Power supply
via the E-bus
Current consumption E-bus
typ. 200 mA
Current consumption power contacts
–
Electrical isolation
500 V (E-bus/signal voltage)
Special features
channel by channel wire break detection, internal and external cold junction, firmware filter adjustable
Weight
approx. 60 g
Operating/storage temperature
-25…+60 °C/-40…+85 °C
Relative humidity
95 %, no condensation
Vibration/shock resistance
conforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emission
conforms to EN 61000-6-2/EN 61000-6-4
Protect. rating/installation pos.
IP20/variable
Approvals/markings
CE, UL, ATEX, IECEx, cFMus
Ex marking
ATEX:
II 3 G Ex nA IIC T4 Gc
IECEx:
Ex nA IIC T4 Gc
Ex tc IIIC T135 °C Dc
cFMus:
Class I, Division 2, Groups A, B, C, D
Class I, Zone 2, AEx ec IIC T4 Gc
Housing data
EL-12-8pin
Design form
compact terminal housing with signal LEDs
Material
polycarbonate
Dimensions (W x H x D)
12 mm x 100 mm x 68 mm
Installation
on 35 mm DIN rail, conforming to EN 60715 with lock
Side by side mounting by means of
double slot and key connection
Marking
labeling of the BZxxx series
Wiring
solid conductor (e), flexible conductor (f) and ferrule (a): spring actuation by screwdriver
Connection cross-section
s*: 0.08…2.5 mm²,
st*: 0.08…2.5 mm²,
f*: 0.14…1.5 mm²
Connection cross-section AWG
s*: AWG 28…14,
st*: AWG 28…14,
f*: AWG 26…16
Stripping length
8…9 mm
Current load power contacts
Imax: 10 A
*s: solid wire; st: stranded wire; f: with ferrule